Weighing-wagon.



L. D. NORRIS.

WE IGHING WAGON.

(Application filed Dec. 19, 1898.) (N0 Modal.) 2 sham-sheen.

. so that it maynot become displaced by means UNITED STATES PATENTOFFICE.-

LUCIUS D.- NORRIS, or MADRID, IOWA.

WEIGHING-WAGQN.

srncrrrcacrroiv forming part of Letters Patent No. 645,568, dated March20, 1906. Application filed December 19,1898. Serial No. 699,661. (Nomodel.)

T0 at whom it may concern:

Be it known that I, LUoIUs D. NORRIS, a citizen of the United States ofAmerica, residihg at Madrid, in the county of Boone and State of Iowa,have invented certain new and useful Improvements in 'Weighing-Wagons,of which the following is a specification.

This-invention relates to that class of weighing-wagons in which thebalancing-levers are placed on the wagon-frame and the wagonbedsupported upon them and so arranged that the wagon-bed may be moved to aposition resting upon the wagon-frame to thereby remove the strain andwear from the balancinglevers when the wagon is in use.

My invention relates more particularly to a certain weighing-wagoninventedby D. J. Norris and S. D. Norris and patented August 22, 1882,No. 263,201.

The object of my present invention is to provide a weighing-wagon thatwill be simpler, stronger, and more durable than others of its class,and particularly to provide improved means for supporting the wagon-bedupon the knife-edge surfaces of the balancing-levers,whereby thecontacting surfaces of these parts may not easily become disturbed ormisplaced with relation to each other-as, for instance, by the shakingor jarring of the wagon when in use. IIeretofore after the wagon hasbeen used the bearing-surfaces of the various parts of the weighingapparatus did not always ref-Engage at the same points as before suchuse, and hence a maximum of accuracy was not attained.

My object is, further, to provide for the adjustment of the knife-edgedsurfaces of the balancing-levers so that when worn they may be turnedand a sharp edge brought into use.

A further object is to provide an improved balance-indicator, arrangedand constructed of the shaking of the wagon when in use.

My invention consists only in certain details of constructionarrangement, and combination of parts, as hereinafter more fully setforth, pointed out in my claims, and illustrated in the accompanyingdrawings, in which Figure 1 shows a top or plan view of that portion ofmy improved weighing apparatus adapted to be placed on the trucks of awagon.

be attached to the wagon-bed in position on the knife-edged support andwith the Weighs in g-levers and connected parts in their raisedposition. Fig. 4 shows an enlarged vertical sectional view through thecentral portion of the balancing-indicator and connected parts.

Fig. 5 shows a detail sectional view illustrating one of thesupporting-feet of the wagonbed resting upon one of the knife-edgedpins.

Referring to the accompanying drawings, the reference-numeral 10 is usedto indicate the wagon-wheels, and 11 a rectangular frame supported uponthe bolsters of the wagon in the usual way in which the wagon-bed issupported. In this frame 11 I have mounted ro tatably the two shafts 12and 13 to extend transversely to points near the opposite sides of thewagon. In each of the shafts two crankarms 14 are formed and from eachcrank-arm a metal loop depends. These loops are for the purpose ofsupporting the weighing-levers, as will hereinafter appear. On the endof each of the shafts 12 and 13 is a crank-arm l6, and these arms areconnected by means of a rod 17. A lever 18, fulcrumed to the wagon-bed,is connected with this rod by means ofa link 19, and hence as the leveris operated the said loop may be either raised or lowered, resulting inthe raising or l0wering of the wagon-bed, so that it may be supportedupon either the said frame 11 or the balancing-levers, as willhereinafter appear. A segmental rack 20 is secured to the wagonbed, anda spring-actuated pawl 21, attached to the lever, engages the rack,whereby the lever may be locked in any position.

Under each end of the wagon-bed is a forked balancing-lever constructedas follows: The forked end pieces are indicated by the numeral 22 and inthe end of each is an oval opening 23. each of these ends at oppositeend portions of the opening are the transversely-square pins 24, whichare secured by being driven in place, so that when one edge thereofbecomes worn the pin may be driven out and turned to present a new edge.These two end Extended transversely through pieces are curved towardeach other and joined, and between their united ends the straight bar isclamped. This bar is provided with a notch in its outer end and designedto receive a loop 26 for connecting it with another lever. The aforesaidloops 25 are made to encircle the pins 24 nearest to the center of theWagon, and the weight of the wagon is placed upon the outer pins 24, aswill appear hereinafter. Hence the ends of the bars 25 are forcedupwardly. A straight lever 27 is provided, having an oblong opening 28in its inner end. At the said inner end two square pins 29 and 30,similar to the pins 24, are passed through the opening and the two loops26 are made to encircle the pin 29.

The wagon-bed is provided on its outer surface with five legs 31, eachhaving a grooved lower end to rest upon and engage the square pins 24 inthe outer ends of the forked levers and the pin 30 of the straightlever. In practical operation with this part of the apparatus,

and assuming that the levers 16 are in a vertical position as requiredto elevate the feet 31 and with them raise the wagon-bed above the frame11, it is obvious that all of the weight of the wagon will be thrownupon the outer ends of the levers and that these levers are pivotedupon'the pins 24 in the links 15. Henceall of the weight on their endswill be applied to 1 move the inner ends of the lever upwardly,

thus drawing the inner end of the lever 27 upwardly. The central one ofthe feet 31 by engaging the pin 30 in said lever 27 transmits this powerto a downward pull upon the outer end of the lever27. Furthermore, whenthe cranks 16 are moved to a horizontal position and the wagon-bed isthereby lowered to rest upon the frame 11 it is obvious that the legs 31do not disengage from the pins 24 and 30 and the loops 15 and 26encircle the pins 2& and 29. Hence no amount of jarring and shaking,such as is given to a wagon, will cause these parts to become disengagedand the scales inoperative thereby. When it is desired to use thewagon-bed for weighing purposes, the levers 16 are turned upwardly andthe weight of the wagon is supported upon the knife-edged pins. Theouter end of the lever 27 has a link 32 pivotall y attached thereto toconnect with the scale-beam This scale-beam is mounted in a box 34; onthe side of the wagon-bed and is of the ordinary construction save for abalance-indicator, which is constructed as follows: The forward end ofthe scale-beam 33 is provided with a segmental arm or frame 38,extending downwardly and forwardly, as shown. In-

.tegral with this arm or frame 38 is a bar 35,

extending above said segmental arm or frame. Pivotally mounted on thesaid bar is an indicator 36, having an index-finger 37, adapted todescribe an are identical with the are described by the segment-al armor frame, which has a scale marked thereon. The upper portion of theindicator is provided with a projection 4.0, which is engaged by acircumferential groove in the weight 39, which weight is rotatablymounted upon the screw-threaded rod extending above the segmental arm orframe. Thus the weight by moving upon the screw-threaded rod engages theprojection at the upper part of the indicator and causes theindex-finger to move in an opposite direction upon the bearing 41. Thisindicator is very essential to accuracy in weighing, by reason of thevariation in the weight of the wagon bed at various times, as it mayoften happen that a difference in the weight of the wagon-bed may resultbetween the time of loading and unloading byachange in the weather or bythe adherence of mud to the wagon-bed; but if the index-finger shouldstand at either side of zero it would indicate an increase or decreasein pounds weight. Considering this, it is obvious that the balancingdevice or indicator should be so constructed that when once set therecan be no deviation from the position it occupies unless manuallyoperated, or, in other words, the construction of the indicator isnecessarily such that when set no jolting or jarring of the wagon cancause it to deviate from the position in whichit is placed. Thus it willbe seen that the indicator always registers the number of poundsvariation required to balance the scales. Th us the exact variation inthe weight of the bed may be obtained from time to time.

The screw-thread prevents the balancing weight from sliding upon therod, and the index-finger thereby being maintained at the same positionsrelative to the scale upon the segmental arm or frame. WVhen the deviceis used as a platform-scale, the frame 11'is placed upon the ground andthe transverse shafts need not be rotatably mounted nor provided withcrank-arms. However, in other respects the parts are identical, and itis thought unnecessary to describe further the operation of the devicein this connection.

Having thus described my machine, what I claim, and desire to secure byLetters Patent of the United States therefor, is-

1. In a weighing-wagon, the combination of a frame, a wagon-bed abovethe frame, two shafts rotatably mounted transversely of the frame, andeach having two crank-arms therein, two forked levers each having ineach end of the fork an elongated opening, two detachable pins passedthrough the levers at said openings, a metal loop for each of saidcrankarms to encircle the inner pin of each of said forked ends and alsothe crank arms, a straight lever having an elongated opening in one end,two detachable pins in said opening rectangular in cross-section, twometal loops attached to the inner end of said forked leversaud to theinner one of said latter pins, and legs on the wagon-bed to rest uponthe remaining ones of said pins, for the purposes stated.

2. In a weighing-wagon, the combination of a frame, a wagon-bed upon theframe, two

shafts rotatably mounted transversely of the frame, and each having twocrank-arms therein, two forked levers each having in each end of thefork an elongated opening, two detachable pins passed through the leversat said openings, a metal loop for each of the said crank-arms toencircle the inner pin of each of said forked ends and also thecrank-arms, a straight lever having an elongated opening in one end, twodetachable pins in said opening rectangular in cross-secti0n, two metalloops attached to the inner ends of said forked levers and to the innerone of said latter pins,

.legs on the wagon-bed to rest upon the remaining ones of said pins, acrank-arm on the end of each of said shafts, a rod for connectin g them,and a lever attached thereto where-- poses stated.

LUOIUS D. NORRIS.

NVitnesses:

W. H. KEIGLEY, O. E. PETERSON.

